Top 150+ Solved Computer Awareness MCQ Questions Answer
Q. Communications device, combines transmissions from several devices into on line is
a. concentrator
b. modifier
c. multiplexer
d. full-duplex line
Q. Data communications involving telegraph lines uses
a. simplex lines
b. wideband channels
c. narrowband channels
d. dialed service
Q. An advantage of the laser printer respect to impact printer is
a. it is quieter/ faster
b. output is of a high quality
c. support wide range of type fonts
d. all the above
Q. Data entry can be performed with all of thefollowing except
a. OCR / OMR
b. COM
c. Voice-recognition systems
d. MICR
Q. Magnetic tape can serve as
a. input media
b. output media
c. secondary-storage media
d. all the above
Q. The advantages of COM are its and .
a. compact size; readability
b. compact size; speed
c. readability; speed
d. compact size; low cost
Q. Elementary data item are
a. data item which is not broken down into smaller units
b. data item that can be broken down into smaller units
c. data item which is not decomposed into smaller units
d. none of these
Q. A semiconductor memory which allows the eraser of the information stared in it so that new information can be stared in it is referred as
a. EPROM
b. ROM
c. RAM
d. None of these
Q. Extended ASCII uses
a. 8 bits for coding
b. 9 bits for coding
c. 10 bits for coding
d. 11 bits for coding
Q. A device used for transmission of images scanned at a transmitting point and duplicated at a receiving point is
a. Facsimile (FAX)
b. Telephone
c. Photocopier
d. None of these
Q. A data transmission medium made of tiny threads of glass or plastic that can transmit huge amount of information at the speed of light is
a. Fiber optic cable
b. Copper cable
c. Twisted wire cable
d. None of these
Q. A method of using a communication channel in which signals can be transmitted between a source and a destination in both directions simultaneously is called
a. Full duplex
b. Half duplex
c. Quarter duplex
d. None of these
Q. A sequential electronic circuit which can beplaced in one out of two stable states where each state may be used to represent a binary digit is stated as
a. Integrated circuit
b. Firmware
c. Flip-flop
d. None of these
Q. A sequence of instruction (software) that is substituted for hardware and stored in read- only memory (ROM) is called
a. Integrated circuit
b. Firmware
c. Flip-flop
d. None of these
Q. Anonymous FTP is the
a. Internet file transfer protocol
b. Protocol that requires password
c. None access files
d. None of these